Double Concave Spherical Lenses: -5D, FL:200mm – Pack of 5

Spherical Lenses: Double Concave

With optically worked faces and ground edges, for educational purposes.

• Diameter: 50mm
• Focal Length: 200mm
• Power: -5D
• Refractive index: 1.52 approx.
• Material: Float Glass
• Pack of 5